A flaw was found in Samba. A remote attacker can exploit a misconfiguration in Samba file servers and classic domain controllers that use the "check password script" feature. If this script is configured with the %u substitution character, the client-controlled username is passed without proper escaping of shell meta-characters. This vulnerability allows an attacker to achieve remote command execution on the affected system. This issue primarily affects non-standard configurations where the "check password script" is used with %u and the samba-dcerpcd service is started as a system service.
References
Configurations
Configuration 1 (hide)
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History
No history.
Information
Published : 2026-05-28 09:16
Updated : 2026-09-04 13:19
NVD link : CVE-2026-4408
Mitre link : CVE-2026-4408
CVE.ORG link : CVE-2026-4408
JSON object : View
Products Affected
redhat
- enterprise_linux
- openshift_container_platform
samba
- samba
CWE
CWE-78
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
